Evaluation of the role of mother tree factors on progeny in Scots pine
1998
Kurm, M. | Tamm, Ue. | Moels, T. (Estonian Agricultural University, Tartu (Estonia))
The present paper is based on a data set of 30-year-old trial cultures of Scots Pine founded in the former arable land on two compartments of Jaervselja Training and Experimental Forest Centre in 1965. While founding the trials, the objective was to test whether ecological differences in sites have led to changes in the gene pool of populations. The aim of the paper is to estimate how the characteristics of the progeny depend on the quality and habitat of their mother tree, and on the site of the progeny. The heritability coefficient of the height and diameter characteristics has been estimated. From the results of statistical analysis conducted by new SAS/STAT software, one can see that the mother tree habitat has a significant effect on progeny (P=0.002). Among the phenotypical properties of the mother trees, the weight of seeds had the most significant influence on the progeny. Thus, the 30-year-old trees grown up from heaviest seeds are slightly shorter and have a smaller breast-height diameter than the trees from the seeds of the smallest weight. The genetical effect of mother trees was not detected, and the heritability coefficient was close to zero
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